CN110358257A - A kind of restorative procedure of filler and defect of pipeline - Google Patents
A kind of restorative procedure of filler and defect of pipeline Download PDFInfo
- Publication number
- CN110358257A CN110358257A CN201910724439.1A CN201910724439A CN110358257A CN 110358257 A CN110358257 A CN 110358257A CN 201910724439 A CN201910724439 A CN 201910724439A CN 110358257 A CN110358257 A CN 110358257A
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- Prior art keywords
- pipeline
- preparation
- cylinder
- filler
- sleeve
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- 239000000945 filler Substances 0.000 title claims abstract description 63
- 230000007547 defect Effects 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000002360 preparation method Methods 0.000 claims abstract description 57
- 239000000463 material Substances 0.000 claims abstract description 21
- 229920001187 thermosetting polymer Polymers 0.000 claims abstract description 20
- 239000000178 monomer Substances 0.000 claims abstract description 15
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 13
- 125000002091 cationic group Chemical group 0.000 claims abstract description 12
- 239000003999 initiator Substances 0.000 claims abstract description 12
- 238000010438 heat treatment Methods 0.000 claims abstract description 6
- 239000003822 epoxy resin Substances 0.000 claims description 12
- 229920000647 polyepoxide Polymers 0.000 claims description 12
- -1 polypropylene Polymers 0.000 claims description 9
- 239000004743 Polypropylene Substances 0.000 claims description 8
- 229920001155 polypropylene Polymers 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 7
- 239000003973 paint Substances 0.000 claims description 6
- 229920005989 resin Polymers 0.000 claims description 6
- 239000011347 resin Substances 0.000 claims description 6
- 238000004804 winding Methods 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- 238000007711 solidification Methods 0.000 abstract description 5
- 230000008023 solidification Effects 0.000 abstract description 5
- 238000007789 sealing Methods 0.000 description 19
- 239000007788 liquid Substances 0.000 description 10
- 229910000831 Steel Inorganic materials 0.000 description 9
- 238000010586 diagram Methods 0.000 description 9
- 239000010959 steel Substances 0.000 description 9
- 238000003466 welding Methods 0.000 description 8
- 238000011049 filling Methods 0.000 description 6
- 239000004922 lacquer Substances 0.000 description 6
- 239000000843 powder Substances 0.000 description 6
- 230000001681 protective effect Effects 0.000 description 6
- 238000009413 insulation Methods 0.000 description 5
- 230000008602 contraction Effects 0.000 description 4
- 230000002950 deficient Effects 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- 238000006116 polymerization reaction Methods 0.000 description 3
- 208000037656 Respiratory Sounds Diseases 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000002421 anti-septic effect Effects 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000005273 aeration Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 238000007334 copolymerization reaction Methods 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000003032 molecular docking Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 229920005749 polyurethane resin Polymers 0.000 description 1
- 150000003254 radicals Chemical class 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L51/00—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
- C08L51/08—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers grafted on to macromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L63/00—Compositions of epoxy resins; Compositions of derivatives of epoxy resins
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/16—Devices for covering leaks in pipes or hoses, e.g. hose-menders
- F16L55/168—Devices for covering leaks in pipes or hoses, e.g. hose-menders from outside the pipe
- F16L55/175—Devices for covering leaks in pipes or hoses, e.g. hose-menders from outside the pipe by using materials which fill a space around the pipe before hardening
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/18—Applications used for pipes
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Pipe Accessories (AREA)
Abstract
The present invention provides a kind of filler and the restorative procedure of defect of pipeline, the filler includes: the first preparation, and first preparation includes thermosetting material and Expanding Monomer, and the Expanding Monomer is added in the thermosetting material with the weight ratio of 5%-15%；Second preparation, second preparation include curing agent and cationic initiator, and the cationic initiator is added in the curing agent with the weight ratio of 3%-6%；Wherein, first preparation and the second preparation Hybrid Heating expand copolyreaction.Volume expands after filler solidification proposed by the present invention, can abut with cylinder and pipeline, the stress in defect of pipeline portion is sufficiently transmitted to cylinder.
Description
Technical field
The present invention relates to pipe rehabilitation technology field, in particular to the restorative procedure of a kind of filler and defect of pipeline.
Background technique
Pipe-line is after longtime running, in fact it could happen that metal loss, interlayer, crackle, girth joint are abnormal and recessed
It falls into and the defect for influencing oil-gas pipeline delivery safety is waited to be covered on the defect of pipeline by two steel sleeves in the prior art
Place, and fills epoxy resin in the gap of steel sleeve and pipeline enclosure, makes stress transfer at defect of pipeline to steel sleeve
On, to achieve the purpose that carry out reinforcement recovery to pipeline.But epoxy resin is with the sky of liquid underfill to steel sleeve and pipeline enclosure
In gap, then solidify, the phenomenon that this process will appear volume contraction, causes the epoxy resin after solidifying that cannot be filled up completely steel
The gap of sleeve and pipeline enclosure processed, and compactness is not high, so that the scarce capacity of the epoxy resin transmitting stress after solidifying.
Summary of the invention
The main object of the present invention is to provide a kind of filler, it is intended to solve in the prior art epoxy resin with liquid underfill
The phenomenon that will appear volume contraction to after solidifying in the gap of steel sleeve and pipeline enclosure, cause the epoxy resin after solidifying cannot
It is filled up completely the gap of steel sleeve and pipeline enclosure, so that the problem of the scarce capacity of the epoxy resin transmitting stress after solidifying.
To achieve the above object, the present invention proposes a kind of filler, and the filler includes: the first preparation, described first
Preparation includes thermosetting material and Expanding Monomer, and the thermosetting material is added with the weight ratio of 5%-15% in the Expanding Monomer
In；Second preparation, second preparation include curing agent and cationic initiator, and the cationic initiator is with 3%-6%'s
Weight ratio is added in the curing agent；Wherein, it is anti-to expand copolymerization for first preparation and the second preparation Hybrid Heating
It answers.
Optionally, the mixed proportion of first preparation and second preparation is 3:0.5~1:1.5.
Optionally, it is 100 DEG C -150 DEG C that first preparation and second preparation, which expand the temperature of copolyreaction,.
Optionally, vacuum outgas and defoaming are carried out when first preparation and second preparation expand copolyreaction
Processing.
Optionally, the thermosetting material is epoxy resin.
The present invention also proposes that a kind of restorative procedure of defect of pipeline, the restorative procedure of the defect of pipeline include following step
It is rapid: first sleeve and second sleeve being covered on the rejected region of pipeline and are mutually butted composition cylinder；In the cylinder and pipe
Filler is inserted in the seal chamber that road encloses；Close feed inlet, discharge port and the pipe nozzle on the cylinder.
Optionally, it first sleeve and second sleeve is covered on the rejected region of pipeline and is mutually butted composition circle described
Before cylinder, further includes: derust to the rejected region of the pipeline.
Optionally, described that first sleeve and second sleeve are covered on the rejected region of pipeline and are interconnected to form cylinder
Before, further includes: one layer of resin base paint of external coating at defect of pipeline position.
Optionally, it inserts before filler, is further comprised the steps of: institute in the seal chamber that the cylinder and pipeline enclose
It states seal chamber and is evacuated to vacuum degree and reach 50KPa-80Kpa.
Optionally, after feed inlet, discharge port and the pipe nozzle on the closing cylinder, further includes: described
The region overlay viscoelastic body and/or polypropylene Cold winding band not covered by the cylinder on pipeline.
Technical solution of the present invention is by being added shape in the thermosetting material for Expanding Monomer with the weight ratio of 5%-15%
At the first preparation, cationic initiator is added in the curing agent with the weight ratio of 3%-6% and forms the second preparation, then will
First preparation and the second preparation Hybrid Heating expand copolyreaction, obtain the filler with expansion characteristics, fill
Volume expands after agent solidification, can abut with cylinder and pipeline, the stress in defect of pipeline portion is sufficiently transmitted to cylinder.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
The structure shown according to these attached drawings obtains other attached drawings.
Fig. 1 is the application schematic diagram of filler of the present invention；
Fig. 2 is application schematic diagram of the filler of the present invention under another vision；
Fig. 3 is the structural schematic diagram of cylinder in Fig. 1；
Fig. 4 is structural schematic diagram of the cylinder under another vision in Fig. 1；
Fig. 5 is the flow diagram of an embodiment of the restorative procedure of inventive pipeline defect；
Fig. 6 is the second embodiment flow diagram of the restorative procedure of inventive pipeline defect；
Fig. 7 is the 3rd embodiment flow diagram of the restorative procedure of inventive pipeline defect；
Fig. 8 is the 3rd embodiment flow diagram of the restorative procedure of inventive pipeline defect；
Fig. 9 is the fourth embodiment flow diagram of the restorative procedure of inventive pipeline defect.
Drawing reference numeral explanation:
| Label | Title | Label | Title |
| 10 | Pipeline | 22 | Second sleeve |
| 11 | Rejected region | 221 | Feed inlet |
| 20 | Cylinder | 23 | Sealed circular ring |
| 21 | First sleeve | 231 | Sealing element |
| 211 | Pipe nozzle | 30 | Insulated enclosure set |
| 212 | Discharge port | 40 | Filler (filler) |
The embodiments will be further described with reference to the accompanying drawings for the realization, the function and the advantages of the object of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiment is only a part of the embodiments of the present invention, instead of all the embodiments.Base
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts it is all its
His embodiment, shall fall within the protection scope of the present invention.
It is to be appreciated that the directional instruction (such as up, down, left, right, before and after ...) of institute is only used in the embodiment of the present invention
In explaining in relative positional relationship, the motion conditions etc. under a certain particular pose (as shown in the picture) between each component, if should
When particular pose changes, then directionality instruction also correspondingly changes correspondingly.
In addition, the description for being related to " first ", " second " etc. in the present invention is used for description purposes only, and should not be understood as referring to
Show or imply its relative importance or implicitly indicates the quantity of indicated technical characteristic." first ", " are defined as a result,
Two " feature can explicitly or implicitly include at least one of the features.In addition, the technical solution between each embodiment can
It to be combined with each other, but must be based on can be realized by those of ordinary skill in the art, when the combination of technical solution occurs
Conflicting or cannot achieve when, will be understood that the combination of this technical solution is not present, also not the present invention claims protection model
Within enclosing.
The present invention proposes that a kind of filler 40, the filler 40 include: the first preparation, and first preparation includes thermosetting
Property material and Expanding Monomer, the Expanding Monomer is added in the thermosetting material with the weight ratio of 5%-15%；Second preparation,
Second preparation includes curing agent and cationic initiator, and institute is added with the weight ratio of 3%-6% in the cationic initiator
It states in curing agent；Wherein, first preparation and the second preparation Hybrid Heating expand copolyreaction.
In the present embodiment, Expanding Monomer is added in the thermosetting material to stir evenly to be formed with the weight ratio of 5%-15%
The additional proportion of first preparation, Expanding Monomer is bigger, and volume expansion is more obvious after thermosetting material solidification；To guarantee thermosetting material
Material smoothly solidification, needs to be added in the first preparation the second preparation being made of curing agent and cationic initiator, cation draws
Hair agent is added in curing agent with the weight ratio of 3%-6% and is stirred evenly；First preparation and the second preparation Hybrid Heating
It expands copolyreaction and forms the liquid filler 40 with expansion characteristics.Volume occurs swollen after liquid filler 40 solidifies
Swollen, the volume after expanding is equal to the volume of liquid filler 40, or greater than the volume of liquid filler 40, or exists certain
The contraction of degree but be greater than the cured volume of Expanding Monomer is not added, such as shrink 1%.
As shown in Figs 1-4, with expansion characteristics liquid filler 40 solidified in seal chamber after with cylinder 20 and pipeline
10 abut, can be sufficiently by the stress transfer of 10 defective part of pipeline to cylinder 20.
Rejected region 11 on pipeline 10 is installed with defect repair structure, and the defect repair structure includes: first sleeve
21 engage to form cylinder 20 and form closing line in the axial direction with second sleeve 22 with second sleeve 22, the first sleeve 21,
The first sleeve 21 is provided with sealing element 213 at both ends with the second sleeve 22, and the sealing element 213 is positioned at described
The medial surface of first sleeve 21 and second sleeve 22, wherein the sealing element 213 of the same end is interconnected to be formed on the cylinder 20
Sealed circular ring 23；The surface that the cylinder 20 is covered on 10 rejected region 11 of pipeline, which forms the pipeline 10, to be surrounded, described close
Insulated enclosure set 30 is provided between envelope annulus 23 and the pipeline 10；What the surface of the pipeline 10 and the cylinder 20 were formed
Filler 40 is filled in seal chamber.
In the present embodiment, first sleeve 21 and second sleeve 22 are covered on the surface of the rejected region 11 of pipeline 10, and
And first sleeve 21 connects with second sleeve 22, pieces together a cylinder 20 and forms encirclement, the engagement that stitching portion is formed to pipeline 10
Line (not indicating in figure) can be straight line and be also possible to curve, as long as first sleeve 21 and second sleeve 22 are capable of forming a closure
Cylinder 20, closing line are axially extending towards pipeline 10 or cylinder 20.
First sleeve 21 and second sleeve 22 are provided with sealing element 213, first sleeve 21 and second sleeve in medial surface
After 22 engagements, sealing element 213, which is mutually butted, forms sealed circular ring 23 at the both ends of cylinder 20, to guarantee that seal chamber can form and have
It will not material leakage when the cavity and filling filler 40 of certain vacuum degree.Alternating floor insulation is close between sealed circular ring 23 and pipeline 10
Big envelope 30 prevents cylinder 20 from contacting pipeline 10, and insulated enclosure set 30 is made of the good material of insulating properties, so that cylinder 20 will not
With pipeline formed open circuit potential, can protective conduit 10, first sleeve 21 and second sleeve 22, while work as defect further expansion
It can also play the role of sealing leak-stopping to the transmission liquid in pipeline 10 after to leakage.
Filler 40 can prevent defect from further spreading by the stress transfer of 10 defective part of pipeline to cylinder 10.
In the preferred embodiment, first sleeve 21 and second sleeve 22 are semicircular cylinder 20, and joint is welded as a whole to be formed
The cylinder 20 for surrounding pipeline 10 does not need to carry out decompression processing to pipeline 10, therefore since pipeline 10 is not directly involved in welding
It will not influence the normal conveying of pipeline 10, pipeline 10 is not present burn-through or generates the risk of new crackle in welding, to welding
Quality requirement reduce；Pipeline 10 can be the oil-gas pipeline 10 for conveying natural gas or petroleum, the rejected region 11 of pipeline 10
Positioned in the middle part of cylinder 20.Wherein, first sleeve 21 and second sleeve 22 can be steel sleeve, and sealed circular ring 23 is steel
Ring.
In the present embodiment, the filler 40 (not indicating in figure) is (filler after as solidifying of thermosetting property filler 40
40), and the thermosetting property filler 40 is full of the seal chamber.
By the thermosetting property filler 40 of liquid be full of seal chamber, after solidification with the medial surface of first sleeve 21 and second sleeve 22
It coheres, the filler 40 that stress caused by the impact of the managed interior transport materials of rejected region 11 passes through after solidifying is transferred to cylinder
20, achieve the purpose that protective conduit 10.
Further, the mixed proportion of first preparation and second preparation is 3:0.5~1:1.5.
To guarantee that seal chamber can be filled up after filler 40 can smoothly solidify and after expansion, filler 40 and circle are avoided
There are gaps between cylinder 20, enable filler 40 that stress to be farthest transferred to cylinder 20, after preventing solidity filler 40 from solidifying
The mixed proportion of volume contraction, the first preparation and the second preparation is 3:0.5~1:1.5, the arbitrary number in the proportional region
Value can reach purpose, and e.g., 3:1 or 1:1 are not enumerated herein.
Specifically, it is 100 DEG C -150 DEG C that first preparation and second preparation, which expand the temperature of copolyreaction,.
Only temperature reaches a timing, and cationic initiator, which could decompose, produces sufficient amount of free radical initiation expansion
Polymerization reaction occurs for monomer and thermosetting material, and as the temperature rises, reaction speed is accelerated, and cohesion rate increases conversion ratio and mentions
Height, but when the temperature is excessively high, reaction is not easy to control, and therefore, in the present embodiment, the temperature for expanding copolyreaction is 100 DEG C -150 DEG C,
Stable reaction to guarantee preparation is controllable.
Optionally, vacuum outgas and defoaming are carried out when first preparation and second preparation expand copolyreaction
Processing.
The compactness of filler 40 is the key that can the stress of rejected region 11 sufficiently be transmitted on cylinder 20, and filler 40 is got over
Closely knit, the performance for transmitting stress is better.Therefore, the first preparation and the second preparation carry out true during expanding copolyreaction
Sky degassing and defoaming treatment, to prevent the compactness of aeration filler 40.
As one embodiment, the thermosetting material is epoxy resin.
Under the action of cationic initiator, epoxy resin and Expanding Monomer expand polymerization reaction, are formed with swollen
The filler 40 of swollen performance.It should be understood that epoxy resin and the not exclusive heat that can expand polymerization reaction with Expanding Monomer
Thermoset material, e.g., polyurethane or phenolic resin etc. do not enumerate herein.
Feed inlet 221, discharge port 212 and pipe nozzle 211 are offered on cylinder 20.
Wherein, for feed inlet 221 for being filled with filler 40, it is more that discharge port 212 is used for discharge when 40 setting expansion of filler
Remaining filler 40.The caliber size of feed inlet 221 and discharge port 212 can be designed according to filling equipment or the amount of filler 40, tool
Depending on body is as needed.In the preferred embodiment, feed inlet 221 and discharge port 212 are not located at first sleeve 21 or the second simultaneously
Sleeve 22.
Optionally, the 10 depression in the surface position of pipeline is filled with powder of lacquer putty for use on so that 10 surfacing of the pipeline.
10 depression in the surface position of pipeline filling powder of lacquer putty for use on makes 10 surfacing of pipeline, guarantees that the stress of rejected region 11 fills
Divide and is transmitted to cylinder 20.
Further, the roughness on 10 surface of pipeline is greater than or equal to 30 μm.
Roughness helps to improve the frictional force between pipeline 10 and insulated enclosure set 30, reduces by 10 surface of pipeline and insulation
Shear strength between sealing shroud 30 is further ensured that the reliability using transmitting, and increases the axial tensile property of pipeline 10.
Powder of lacquer putty for use on can fill and lead up powder of lacquer putty for use on to be dedicated, and filling and leading up powder of lacquer putty for use on has certain intensity, carry out grinding process after hardening, so that pipe
The roughness on 10 surface of road is greater than or equal to 30 μm.
Specifically, one layer of resin base paint of the external coating of the pipeline 10.
The adhesive force on 10 surface of pipeline can be improved in resin base paint, and guarantee filler 40 is tightly bonded as one with pipeline 10
Body.
The first sleeve 21 and the end face that second sleeve 22 is interconnected are inclined-plane, the inclined-plane of the first sleeve 21 with
The inclined-plane of second sleeve 22 forms welding groove.
The inclined-plane of first sleeve 21 and the inclined-plane of second sleeve 22 form welding groove, in order to weld, the molten forming liquid of welding rod
Filling is welded as a whole first sleeve 21 and second sleeve 22 to form cylinder 20 into the welding groove after state.Or, can not also incite somebody to action
The end face that first sleeve 21 and second sleeve 22 are interconnected is set as inclined-plane, but adds a connecting piece in joint, then will
Connection sheet is welded in first sleeve 21 and second sleeve 22.
It should be understood that the mode that the engagement of first sleeve 21 and second sleeve 22 is not limited in above-mentioned welding e.g. makes
With the stronger adhesive of bond performance.
Further, the insulated enclosure set 30 is hard polyaminoester.
Hard polyaminoester has good insulation performance, cylinder 20 and pipeline 10 can be hindered to form open circuit potential, and to pipe
Play axial protective effect in road 10.
As shown in Figure 3,4, end 3mm~5mm of the sealing element 213 apart from the cylinder 20, and the sealing element 213
The a height of 5mm~10mm of ring, ring thickness 2mm~5mm of the sealing element 213.
With d1The distance of 20 end of cylinder, 3mm≤d are arrived for sealing element 2131≤ 5mm, with d2It is high for the ring of sealing element 213,
5mm≤d2≤ 10mm, with d3Thick, 2mm≤d for the ring of sealing element 2133≤ 5mm, first sleeve 21 with it is close in second sleeve 22
The docking of sealing 213 forms sealed circular ring 23, d1、d2、d3Size determine the volume of seal chamber.And sealing element 213 can increase by
The intensity of one sleeve 21 and second sleeve 22, plays the role of reinforcing rib, prevents first sleeve 21 from installing with second sleeve 22
Preceding deformation occurs, simultaneously as two 23 sizes of sealed circular ring at 20 both ends of cylinder are identical, it can be ensured that cylinder 20 and pipeline 10 it
Between gap it is consistent everywhere, the stress of 10 rejected region 11 of pipeline is sufficiently transmitted on cylinder 20.
Specifically, not being provided with viscoelastic body by the region that the cylinder 20 covers on the pipeline 10 and/or polypropylene is cold
Tape wrap (does not indicate) in figure.
Viscoelastic body and/or polypropylene Cold winding band have antiseptic property, and viscoelastic body and/or polypropylene Cold winding band are wrapped in pipeline
The region not covered by cylinder 20 on 10, with protective conduit 10 from corrosion.
Please also refer to Fig. 1-5, the present invention also proposes a kind of defect-restoration method therefor of pipeline 10, the defect of the pipeline 10
Restorative procedure includes the following steps:
S10: first sleeve 21 and second sleeve 22 are covered on the rejected region 11 of pipeline 10 and are mutually butted composition circle
Cylinder 20；
S20: filler 40 is inserted in the seal chamber that the cylinder 20 is enclosed with pipeline 10；
S30: feed inlet 221, discharge port 212 and the pipe nozzle 211 on the cylinder 20 are closed.
In the present embodiment, first sleeve 21 and second sleeve 22 are covered on before the rejected region 11 of pipeline 10, and first
Sleeve 21 and second sleeve 22 are welded with sealing element 231, offered in first sleeve 21 and/or second sleeve 22 feed inlet 221,
Inclined-plane is polished or be punched into the end being mutually butted in discharge port 212 and pipe nozzle 211, first sleeve 21 and second sleeve 22,
And it is provided with insulated enclosure set 30 on sealing element 231, then first sleeve 21 and second sleeve 22 are mutually butted composition circle
Cylinder 20, the rejected region 11 of pipeline 10 is located at the middle part of cylinder 20.
Then filler 40 is inserted in the seal chamber that cylinder 20 and pipeline 10 enclose, which has expansion special
Property, it is abutted after being solidified in seal chamber with cylinder 20 and pipeline 10, it can be sufficiently by the stress transfer of 10 defective part of pipeline to circle
Cylinder 20, to achieve the purpose that protective conduit 10.
In the feed inlet 221, discharge port 212 and pipe nozzle 211 closed on the cylinder 20 the step of, discharging can be passed through
40 length of filler (filler 40, which overflows discharge port 212, to freeze) that mouth 212 overflows judge whether filler 40 has filled
Full entire seal chamber.
Further, as shown in fig. 6, in the defective part that first sleeve 21 and second sleeve 22 are covered on to pipeline 10
Position 11 and be mutually butted composition cylinder 20 before, further includes:
S11: it derusts to the rejected region 11 of the pipeline 10.
Rust can reduce the frictional force between insulated enclosure set 30 and pipeline 10, be unfavorable for reducing by 10 surface of pipeline and insulation is close
Shear strength between big envelope 30, therefore, in the rejected region 11 that first sleeve 21 and second sleeve 22 are covered on to pipeline 10
And be welded into before cylinder 20, it needs first to derust to the rejected region 11 of the pipeline 10.In the preferred embodiment, it derusts
Grade reaches ST3 grades or higher.
Roughness helps to improve the frictional force between pipeline 10 and insulated enclosure set 30, reduces by 10 surface of pipeline and insulation
Shear strength between sealing shroud 30 to be further ensured that the reliability using transmitting, and increases the axial pull resistance of pipeline 10
Can, therefore, coarse processing is carried out to 10 surface of pipeline using sander after derusting, make the roughness on 10 surface of pipeline be greater than or
Equal to 30 μm, and in 10 depression in the surface position of pipeline filling powder of lacquer putty for use on so that 10 surfacing of the pipeline.
As shown in fig. 7, the rejected region 11 and mutually that first sleeve 21 and second sleeve 22 are covered on to pipeline 10
Engagement is formed before cylinder 20, further includes:
S12: in one layer of resin base paint of external coating of 10 rejected region 11 of pipeline.
The adhesive force on 20 surface of cylinder can be improved in resin base paint, guarantees that filler 40 and the inner wall of cylinder 20 are tightly bonded as
One.
As shown in figure 8, further including before inserting filler 40 in the seal chamber that the cylinder 20 is enclosed with pipeline 10
Step:
S21: the seal chamber is evacuated to vacuum degree and reaches 50KPa-80Kpa.
It is to guarantee that filler 40 is full of seal chamber, prevents in filler 40 that there are bubbles, filler 40 is being filled in seal chamber
Before, it needs that seal chamber is first evacuated to vacuum degree and reaches 50KPa-80Kpa, pipe nozzle 211 is for connecting vacuum equipment, in order to take out
Vacuum.
As shown in figure 9, after feed inlet 221, discharge port 212 and the pipe nozzle 211 on the closing cylinder 20,
Further include:
S40: not by region overlay viscoelastic body that the cylinder 20 covers and/or polypropylene is cold twines on the pipeline 10
Band.
Viscoelastic body and/or polypropylene Cold winding band have antiseptic property, and viscoelastic body and/or polypropylene Cold winding band are wrapped in pipeline
The region not covered by cylinder 20 on 10, with protective conduit 10 from corrosion.
The foregoing is merely alternative embodiments of the invention, are not intended to limit the scope of the invention, all at this
Under the design of invention, using equivalent structure transformation made by description of the invention and accompanying drawing content, or directly/it is used in it indirectly
He is included in scope of patent protection of the invention relevant technical field.
Claims (10)
1. a kind of filler, which is characterized in that the filler includes:
First preparation, first preparation include thermosetting material and Expanding Monomer, and the Expanding Monomer is with the weight of 5%-15%
Amount is than being added in the thermosetting material；
Second preparation, second preparation include curing agent and cationic initiator, and the cationic initiator is with 3%-6%'s
Weight ratio is added in the curing agent；
Wherein, first preparation and the second preparation Hybrid Heating expand copolyreaction.
2. filler according to claim 1, which is characterized in that the mixing ratio of first preparation and second preparation
Example is 3:0.5~1:1.5.
3. filler according to claim 1, which is characterized in that first preparation is expanded with second preparation
The temperature of copolyreaction is 100 DEG C -150 DEG C.
4. filler according to claim 1, which is characterized in that first preparation is expanded with second preparation
Vacuum outgas and defoaming treatment are carried out when copolyreaction.
5. filler according to claim 1, which is characterized in that the thermosetting material is epoxy resin.
6. a kind of restorative procedure of defect of pipeline, which is characterized in that the restorative procedure of the defect of pipeline includes the following steps:
First sleeve and second sleeve are covered on the rejected region of pipeline and are mutually butted composition cylinder；
Filler is inserted in the seal chamber that the cylinder and pipeline enclose；
Close feed inlet, discharge port and the pipe nozzle on the cylinder.
7. the restorative procedure of defect of pipeline according to claim 6, which is characterized in that described by first sleeve and second
Sleeve is covered on the rejected region of pipeline and is mutually butted before composition cylinder, further includes:
It derusts to the rejected region of the pipeline.
8. the restorative procedure of defect of pipeline according to claim 6, which is characterized in that described by first sleeve and second set
Cylinder is covered on the rejected region of pipeline and is interconnected before forming cylinder, further includes:
One layer of resin base paint of external coating at defect of pipeline position.
9. the restorative procedure of defect of pipeline according to claim 6, which is characterized in that enclosed in the cylinder with pipeline
Seal chamber in insert filler before, further comprise the steps of:
The seal chamber is evacuated to vacuum degree and reaches 50KPa-80Kpa.
10. the restorative procedure of defect of pipeline according to claim 6, which is characterized in that closed on the cylinder described
Feed inlet, after discharge port and pipe nozzle, further includes:
The region overlay viscoelastic body and/or polypropylene Cold winding band not covered by the cylinder on the pipeline.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910724439.1A CN110358257A (en) | 2019-08-08 | 2019-08-08 | A kind of restorative procedure of filler and defect of pipeline |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910724439.1A CN110358257A (en) | 2019-08-08 | 2019-08-08 | A kind of restorative procedure of filler and defect of pipeline |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107057038A (en) * | 2017-05-12 | 2017-08-18 | 瑞派尔（宜昌）科技集团有限责任公司 | A kind of microdilatancy modified epoxy grouting material and preparation method |
| CN108641066A (en) * | 2018-04-17 | 2018-10-12 | 中国科学院化学研究所 | A kind of composition epoxy resin and preparation method thereof |
| CN109000083A (en) * | 2017-06-07 | 2018-12-14 | 中国石油天然气股份有限公司 | A kind of method of epoxy sleeve pipe-repairing |
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2019
- 2019-08-08 CN CN201910724439.1A patent/CN110358257A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107057038A (en) * | 2017-05-12 | 2017-08-18 | 瑞派尔（宜昌）科技集团有限责任公司 | A kind of microdilatancy modified epoxy grouting material and preparation method |
| CN109000083A (en) * | 2017-06-07 | 2018-12-14 | 中国石油天然气股份有限公司 | A kind of method of epoxy sleeve pipe-repairing |
| CN108641066A (en) * | 2018-04-17 | 2018-10-12 | 中国科学院化学研究所 | A kind of composition epoxy resin and preparation method thereof |
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| 李荣光;张巍;赵振;于憬;汤斌;孙旭;邸曼丽;王亚军;: "高钢级管道环焊缝缺陷修复技术探讨", 油气储运, no. 03 * |
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